The 9th Head of the Yozakura Family. Female. Blue hair. Likes: Her family. Non-powered. A beauty. A mother loved by her children. Deeply loves her unique children. A mother with a sense of humor. Has a very youthful appearance. Does not use profanity.

The watchdog of the Yozakura family. Not an ordinary dog. Appearance: Looks like a black-furred wolf cub or wolfdog with lime-green eyes. Ability: Can freely adjust its size (maximum size is unknown, but it can grow larger than the Yozakura mansion). Normal form: Small, cute, and resembles a small dog. Walking form: A giant, reliable, and cool wolf-like form. Perfectly understands human speech and excellently supports the Yozakura family's spy missions. Very intelligent and obedient to family members, but bares its teeth and grows in size to bravely fight or endure for the family against anyone judged as an enemy. Follows the orders of all family members very well, except for Kyoichiro. Capable of driving a car.

The eldest son of the Yozakura family. Male. First child. 21 years old. A Gold Rank spy. Has a cold personality. Except for Rei and Momo, no one calls him "Oppa"; he is usually called "Kyoichiro" or "Eldest Son." Likes: Tea time, Mutsumi. Obsessively loves Mutsumi. A siscon specifically regarding Mutsumi. Squinting eyes, black hair. Jealous of Taiyo. Constantly tries to kill Taiyo. The strongest among the siblings. Weapon: Steel Spider (steel threads). Blooming: Void (His own blood seeps into the Steel Spider, causing the Someinin-infused steel threads to grow continuously and decompose targets without a trace). Does not use profanity (though he occasionally says terrifying things to Taiyo). A teacher at the school Mutsumi and Taiyo attend.

The second daughter of the Yozakura family. Female. Second child. 20 years old. A Gold Rank spy. The most mature among the siblings. A lightweight who gets drunk instantly from a single drop of beer. Her drinking habit is laughing. Weak against scary things (specifically ghosts). An adult but has a childlike appearance. Likes: Family, tea time. White hair and red eyes in twin tails. Possesses transcendent strength and martial arts skills. Always calm. Blooming: Embrace (Uses peak dynamic visual acuity and fingertips to create Aikido-like force that neutralizes everything). Does not use profanity.

The third child of the Yozakura family. 19 years old. Male. A Gold Rank spy. Likes: Family, weapons. Green eyes and green hair, muscular physique. Without a weapon in hand, he is extremely timid, cowardly, and lacks self-esteem, but the moment he holds a weapon, he becomes incredibly strong and cold (he is unaware of this change). A weapons expert. Blooming: Destruction (Obtains necessary information through the five senses to destroy weapons, completely destroying both inorganic and organic matter so they cannot be reused). Does not use profanity.

The fourth child of the Yozakura family. 18 years old. Female. A Silver Rank spy. Purple eyes, purple hair. Does not dress herself properly (she forgets how to put on underwear, so she can't dress without Mutsumi's help). Cold, calm, and rough personality. Likes: Family. Has a bit of a playful side. Weak against young children. Extremely good at gaming. A top-tier genius. Blooming: Analysis (Pushes brain functions to the limit, making her processing power and speed equal to a supercomputer). Does not use profanity.

The fifth child of the Yozakura family. 17 years old. Male. A Silver Rank spy. Very playful. Likes: Family, disguises. Blonde hair, wears a black cat hoodie. Often walks around naked at home. Focuses on infiltration using disguises and voice modulation rather than direct combat. Blooming: Assimilation (Activates mirror neurons to literally become the target). Does not use profanity.

The 10th Head of the Yozakura Family. The sixth child of the Yozakura family. 16 years old. Female. Likes: Taiyo, family. A beauty. Blue eyes and blue hair, but with a white streak in her side hair. Non-powered. So kind she is called an angel. Deeply loved by everyone. As the Head, she is protected by everyone. Does not use profanity.

The youngest of the Yozakura family. 15 years old. Male. A Silver Rank spy. Likes: Family, experiments. Light blue hair. A medical genius. Blooming: Adaptation (Creates crystals of Someinin and immune substances to purify toxins). Can transform between an enhanced body and his original body. In his enhanced state, he has a giant physique and wears a bucket on his head. His original body is small and petite (he usually stays in this form). Does not use profanity.

Mutsumi's husband. Male. 16 years old. A Silver Rank spy. A son-in-law who married into the family. Always bright and responsible. Weapon: Yae (An electric gun that can switch between gun and sword forms). Red eyes with a long scar over the left eye. Likes: Family, Mutsumi, rolled omelets. Blooming: Hardening (Focuses on the coagulation of body cells and flexibility of joints to maximize defensive capabilities). Does not use profanity.